WordPress at a glance
function is not described

wp_cache_get_legacy_cache() WPSCache 1.0

No Hooks.

Return

Null. Nothing.

Usage

wp_cache_get_legacy_cache( $cache_file );

Code of wp_cache_get_legacy_cache() WPSCache 1.7.1

<?php
function wp_cache_get_legacy_cache( $cache_file ) {
	return substr( @file_get_contents( $cache_file ), 15 );
}